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| 型号： | MAX1496EAI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 24/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC 3.5DIGIT LED DRVR 28-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 位数： | 3.5 位 |
| 采样率（每秒）： | 5 |
| 转换器数目： | 1 |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 1 个差分，双极 |
MAX1447/MAX1496/MAX1498
3.5- and 4.5-Digit, Single-Chip ADCs
with LED Drivers
_______________________________________________________________________________________
9
Pin Description
PIN
MAX1496
MAX1447/
MAX1498
NAME
FUNCTION
1
31
VNEG
-2.5V Charge-Pump Voltage Output. Connect a 0.1F capacitor to GND.
232
REF-
Negative Reference Voltage Input. For internal-reference operation, connect REF- to GND.
For external-reference operation, bypass REF- to GND with a 0.1F capacitor and set VREF-
from -2.2V to +2.2V, provided VREF+ > VREF-.
31
REF+
Positive Reference Voltage Input. For internal-reference operation, connect a 4.7F
capacitor from REF+ to GND. For external-reference operation, bypass REF+ to GND with a
0.1F capacitor and set VREF+ from -2.2V to +2.2V, provided VREF+ > VREF-.
42
AIN+
Positive Analog Input. Positive side of fully differential analog input. Bypass AIN+ to GND
with a 0.1F or greater capacitor.
53
AIN-
Negative Analog Input. Negative side of fully differential analog input. Bypass AIN- to GND
with a 0.1F or greater capacitor.
64
ISET
Segment Current Controller. Connect to ground through a resistor to set the segment
current. See Table 5 for current selection.
75
GND
Ground
8—
VDD
Analog and Digital Circuit Supply Voltage. Connect VDD to a +2.7V to +5.25V power supply.
Bypass VDD to GND with a 0.1F capacitor and a 4.7F capacitor.
98
INTREF
Internal-Reference Logic Input. Connect to GND to select external-reference mode. Connect
to DVDD for the MAX1447/MAX1498 and VDD for the MAX1496 to select the internal-
reference mode.
10
9
RANGE
Range Logic Input. RANGE controls the fully differential analog input range. Connect to
GND for the ±2V input range. Connect to DVDD (MAX1447/MAX1498) or VDD (MAX1496) for
the ±200mV input range.
11
10
DPSET1
Decimal-Point Logic-Input 1. Controls the decimal point of the LED. See the Decimal-Point
Control section.
12
11
DPSET2
Decimal-Point Logic-Input 2. Controls the decimal point of the LED. See the Decimal-Point
Control section.
13
12
PEAK
Peak Logic Input. Connect to DVDD (MAX1447/MAX1498) or VDD (MAX1496) to display the
highest ADC value on the LED. Connect to GND to disable the peak function.
14
13
HOLD
Hold Logic Input. Connect to DVDD (MAX1447/MAX1498) or VDD (MAX1496) to hold the
current ADC value on the LED. Connect to GND to update the LED at a rate of 2.5Hz and
disable the hold function. For the MAX1447, only placing the device into hold mode initiates
an offset mismatch calibration. Assert HOLD high for a minimum of 2s to ensure the
completion of offset mismatch calibration.
15
14
DIG0
Digit 0 Driver
16
15
DIG1
Digit 1 Driver
17
16
GLED
Ground for LED Display Digit Driver
18
17
DIG2
Digit 2 Driver
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